ensure series access has new index

jorisvandenbossche · jorisvandenbossche · commit e2464c0c1510 · 2025-12-17T14:03:49.000+01:00
diff --git a/pandas/core/internals/managers.py b/pandas/core/internals/managers.py
@@ -1200,8 +1200,7 @@ def iget(self, i: int, track_ref: bool = True) -> SingleBlockManager:
         nb = type(block)(
             values, placement=bp, ndim=1, refs=block.refs if track_ref else None
         )
-        # TODO shallow copy index? (might already be done where this gets called)
-        return SingleBlockManager(nb, self.axes[1])
+        return SingleBlockManager(nb, self.axes[1].view())
 
     def iget_values(self, i: int) -> ArrayLike:
         """

Original file line number	Diff line number	Diff line change
`@@ -1200,8 +1200,7 @@ def iget(self, i: int, track_ref: bool = True) -> SingleBlockManager:`
`1200`	`1200`	`nb = type(block)(`
`1201`	`1201`	`values, placement=bp, ndim=1, refs=block.refs if track_ref else None`
`1202`	`1202`	`)`
`1203`		`- # TODO shallow copy index? (might already be done where this gets called)`
`1204`		`- return SingleBlockManager(nb, self.axes[1])`
	`1203`	`+ return SingleBlockManager(nb, self.axes[1].view())`
`1205`	`1204`
`1206`	`1205`	`def iget_values(self, i: int) -> ArrayLike:`
`1207`	`1206`	`"""`